CN220205119U - Lifting platform device for adjusting height of luminous screen - Google Patents
Lifting platform device for adjusting height of luminous screen Download PDFInfo
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- CN220205119U CN220205119U CN202321152970.4U CN202321152970U CN220205119U CN 220205119 U CN220205119 U CN 220205119U CN 202321152970 U CN202321152970 U CN 202321152970U CN 220205119 U CN220205119 U CN 220205119U
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- 230000005540 biological transmission Effects 0.000 claims abstract description 50
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- 238000000429 assembly Methods 0.000 claims abstract description 14
- 230000003028 elevating effect Effects 0.000 claims description 13
- 230000003287 optical effect Effects 0.000 claims description 8
- 230000001965 increasing effect Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 238000002347 injection Methods 0.000 claims description 2
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- 238000005859 coupling reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000010720 hydraulic oil Substances 0.000 description 2
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Abstract
The utility model discloses a lifting platform device for adjusting the height of a luminous screen, which comprises: a frame; the belt transmission mechanism comprises a synchronous transmission rod and two groups of transmission components, and the two groups of transmission components are symmetrically arranged at two sides of the frame; each group of transmission components comprises a driving synchronous pulley, a driven synchronous pulley arranged above the driving synchronous pulley and a synchronous belt sleeved on the driving synchronous pulley and the driven synchronous pulley, and two ends of the synchronous transmission rod are respectively connected to the driving synchronous pulleys of the two groups of transmission components; the lifting table is used for placing the luminous screen, and two sides of the lifting table are respectively connected to synchronous belts of the two groups of transmission assemblies; and the driving motor is configured to be adjustable in rotating speed and controllable in rotating angle, is fixedly connected to the frame and is used for driving the driving synchronous pulley of one group of transmission assemblies.
Description
Technical Field
The present utility model relates to a lifting platform, and more particularly, to a lifting platform device for adjusting the height of a light emitting screen.
Background
Generally, the height position of the light emitting screen is adjusted by using a lifting platform, so as to achieve the purpose of adjusting the distance between the light source (light emitting screen) and the lens.
Two structural types of lifting platforms are provided in the prior art.
The first type of structure is: chinese patent with publication number CN112520622a discloses a four-column double-cylinder hydraulic lifting platform, which comprises: the device comprises a supporting platform, a foundation frame, adjustable upper limit, guide posts, guide sleeves, lateral hard supports, lateral hard support detection sensors, lifting hydraulic cylinders, hydraulic synchronous sensors, upper limit sensors, lower limit sensors, upper buffer blocks and lower buffer blocks, wherein the foundation frame is symmetrically arranged on two sides of the supporting platform, the lifting hydraulic cylinders are arranged in the middle of the foundation frame, the hydraulic synchronous sensors are arranged above the lifting hydraulic cylinders, the two guide posts are symmetrically arranged on two sides of the lifting hydraulic cylinders in the foundation frame, the guide posts are respectively provided with the guide sleeves, the upper limit sensors) and the lower limit sensors are arranged on one side edge of the foundation frame, the adjustable upper limit sensors are respectively arranged on the top of the outer side edge of the foundation frame, the lateral hard support is arranged below the adjustable upper limit sensors, and the upper buffer blocks and the lower buffer blocks are respectively arranged on four corners of the supporting platform.
The lifting platform of the type is mainly used for lifting workpieces by driving the supporting platform through the hydraulic oil cylinder, is mainly used for lifting the workpieces with larger weight, is not suitable for adjusting the height of the workpieces with smaller weight such as a luminous screen, and is particularly unsuitable for adjusting the height of the luminous screen because: hydraulic oil required for the hydraulic cylinder to perform the telescopic action may contaminate the light emitting screen and surrounding equipment due to leakage.
The second type of structure is: the patent publication No. CN215287821U discloses a novel lifting device, which comprises a first fixing plate, the bottom of the first fixing plate is connected with a sliding plate, the first fixing plate is connected with a guide rail, the sliding plate is connected with a lower screw seat, the lower screw seat is connected with a chain screw, the chain screw is connected with an upper screw seat, the upper screw seat is connected with a small chain wheel shaft, the small chain wheel shaft is connected with a small chain wheel, the small chain wheel shaft is connected with a large chain wheel through a chain, the large chain wheel shaft is connected with a motor, the large chain wheel shaft is connected with a gear, the gear is meshed with a rack, the rack is connected with a chain screw, the motor is connected with a motor seat, and the upper screw seat and the lower screw seat are all connected with a second fixing plate.
The lifting platform with the structure mainly adopts a mode of combining a linear guide rail mechanism, a chain wheel transmission mechanism, a gear transmission mechanism and a screw rod transmission mechanism to lift a workpiece. Although this type is fit for adjusting the height of the less work piece of weight, and can reach higher precision, however, the drive mechanism that this platform involved is too many, and the structure is more complicated, and in addition, linear guide mechanism and screw mechanism's manufacturing and/or purchase cost are higher to increased the cost of whole device, especially unsuitable for adjusting the luminous screen height's reason lies in: the noise generated by the mechanisms is larger during operation, and the working condition of the luminous screen has strict requirements on the noise.
Disclosure of Invention
In view of the above technical problems in the prior art, an embodiment of the present utility model provides a lifting platform device for adjusting a height of a light emitting screen.
In order to solve the technical problems, the technical scheme adopted by the embodiment of the utility model is as follows:
a lift platform apparatus for adjusting a height of a light emitting screen, comprising:
a frame;
the belt transmission mechanism comprises a synchronous transmission rod and two groups of transmission components, and the two groups of transmission components are symmetrically arranged at two sides of the frame; each group of transmission components comprises a driving synchronous pulley, a driven synchronous pulley arranged above the driving synchronous pulley and a synchronous belt sleeved on the driving synchronous pulley and the driven synchronous pulley, and two ends of the synchronous transmission rod are respectively connected to the driving synchronous pulleys of the two groups of transmission components;
the lifting table is used for placing the luminous screen, and two sides of the lifting table are respectively connected to synchronous belts of the two groups of transmission assemblies;
and the driving motor is configured to be adjustable in rotating speed and controllable in rotating angle, is fixedly connected to the frame and is used for driving the driving synchronous pulley of one group of transmission assemblies.
Preferably, rectangular hollowed-out parts are formed on two sides of the frame, and the synchronous belt of the transmission assembly spans the rectangular hollowed-out parts; wherein:
two travel switches arranged up and down are arranged on the side wall of the rectangular hollowed-out part, and limit pieces are arranged on the side parts of the lifting platform, and the drive motor is controlled by the limit pieces to limit the vertical movement travel of the lifting platform through the openings of the travel switches.
Preferably, a mounting plate is provided on a side of the lifting table, a clamping plane is formed on the side of the mounting plate, and the synchronous belt is clamped at the clamping plane by means of a clamping plate so as to be connected to the lifting table.
Preferably, the inner side of the clamping plate is provided with tooth marks for increasing friction between the clamping plate and the synchronous belt.
Preferably, the elevating platform assembly for adjusting the height of the light emitting screen further comprises a guide mechanism, the guide mechanism comprising:
a mounting hole formed at a side portion of the elevating platform;
a linear bearing mounted in the mounting hole;
and the guide optical axis vertically penetrates through the linear bearing, and two ends of the guide optical axis are connected to the frame.
Preferably, the frame comprises a base of rectangular structure and an upper support of rectangular structure; the base is spliced with the upper support through a positioning column.
Preferably, the frame is injection molded from a plastic material.
Preferably, the lifting platform device for adjusting the height of the light-emitting screen further comprises a buckle plate, the buckle plate is provided with a downward flanging, the buckle plate is buckled on the light-emitting screen, the downward flanging is opposite to the lateral end face of the lifting platform, and the downward flanging and the lateral end face are penetrated through a pin shaft or a bolt so that the buckle plate positions the light-emitting screen.
Preferably, a drag chain for arranging the wire harness is arranged between the frame and the lifting platform, the drag chain comprises two drag chain bodies which are pivoted, and the two drag chain bodies are folded through pivoting.
Compared with the prior art, the lifting platform device for adjusting the height of the luminous screen has the beneficial effects that:
1. the lifting platform device provided by the utility model has lower noise during operation.
2. The lifting platform device provided by the utility model has the advantages of smaller overall gravity, lower cost and simpler installation.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the utility model, as claimed.
An overview of various implementations or examples of the technology described in this disclosure is not a comprehensive disclosure of the full scope or all of the features of the technology disclosed.
Drawings
In the drawings, which are not necessarily drawn to scale, like numerals may describe similar components in different views. The same reference numerals with letter suffixes or different letter suffixes may represent different instances of similar components. The accompanying drawings illustrate various embodiments by way of example in general and not by way of limitation, and together with the description and claims serve to explain the inventive embodiments. Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or like parts. Such embodiments are illustrative and not intended to be exhaustive or exclusive of the present apparatus or method.
Fig. 1 is a schematic perspective view of a lifting platform device for adjusting the height of a light emitting screen according to an embodiment of the present utility model.
Fig. 2 is a schematic perspective view of another view angle of a lifting platform device for adjusting the height of a light emitting screen according to an embodiment of the present utility model.
Fig. 3 is a schematic diagram of an external structure of a lifting platform device for adjusting a height of a light emitting screen according to an embodiment of the present utility model after a base is omitted.
Fig. 4 is a schematic diagram of an external structure of a lifting platform device for adjusting the height of a light emitting screen according to an embodiment of the present utility model, wherein the lifting platform device only displays a lifting platform and the light emitting screen.
Reference numerals:
10-frame; 11-a base; 12-upper support; 13-rectangular hollowed-out parts; 20-lifting platform; 21-a mounting plate; 211-clamping plane; 212-clamping plate; 2121-tooth trace; 22-limiting sheets; 30-belt drive mechanism; 31-a transmission assembly; 311-a driving synchronous pulley; 312-driven synchronous pulleys; 313-synchronous belt; 32-synchronous transmission rods; 33-coupling; 40-a guide mechanism; 41-linear bearings; 42-guiding the optical axis; 50-driving a motor; 60-travel switch; 70-drag chain; 71-a drag chain body; 80-pinch plate; 81-flanging downwards; 100-a luminescent screen; 101-an electronic control module.
Detailed Description
Unless defined otherwise, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this utility model belongs. The terms "first," "second," and the like, as used herein, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that elements or items preceding the word are included in the element or item listed after the word and equivalents thereof, but does not exclude other elements or items. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", etc. are used merely to indicate relative positional relationships, which may also be changed when the absolute position of the object to be described is changed.
In order to keep the following description of the embodiments of the present utility model clear and concise, the detailed description of known functions and known components thereof have been omitted.
As shown in fig. 1 to 4, an embodiment of the present utility model discloses a lift platform device for adjusting a vertical height of a light emitting screen 100, the lift platform device comprising: the lifting device comprises a frame 10, a lifting table 20, a belt transmission mechanism 30, a driving motor 50, a guide mechanism 40 and a stroke control mechanism.
The frame 10 is generally rectangular in configuration, and the frame 10 includes a base 11 and an upper support 12, the upper support 12 being inserted into the base 11 via a locating post and secured by a fastener, such that the upper support 12 is in a removable assembled relationship with the base 11. The base 11 and the upper support 12 enclose a rectangular hollowed-out part 13 positioned at two sides of the frame 10. The main body structures of the base 11 and the upper support 12 are injection-molded from a plastic material, so that the weight of the frame 10 is greatly reduced.
The lifting platform 20 is located in a space enveloped by the frame 10, the lifting platform 20 is used for placing and positioning the light-emitting screen 100, specifically, the lifting platform 20 is configured into an outline which is approximately consistent with the light-emitting screen 100, such as a rectangular outline, the light-emitting screen 100 is placed on the lifting platform 20, a buckle plate 80 is buckled on the light-emitting screen 100, two opposite sides of the buckle plate 80 are provided with a turndown edge 81, the turndown edge 81 wraps the side edge of the light-emitting screen 100, and the turndown edge 81 and the side end face are opposite to the side end face of the lifting platform 20 and are penetrated through by a pin shaft, so that the light-emitting screen 100 is positioned on the lifting platform 20 through the buckle plate 80. Below the light emitting screen 100 is an electronic control module 101, and the light emitting screen 100 may be controlled by an external control device through the electronic control module 101.
The belt transmission mechanism 30 includes a synchronous transmission rod 32 and two sets of transmission assemblies 31, and the two sets of transmission assemblies 31 are respectively and correspondingly installed on two sides of the frame 10, specifically, each set of transmission assemblies 31 includes: a driving timing pulley 311, a driven timing pulley 312, and a timing belt 313; the driving synchronous pulley 311 is arranged on the base 11, the driven synchronous pulley 312 is arranged above the driving synchronous pulley 311 and on the upper support 12, and the synchronous belt 313 is sleeved on the driving synchronous pulley 311 and the driven synchronous pulley 312 at the same time; the driving motor 50 is mounted on the base 11, and an output shaft of the driving motor 50 is connected to the driving synchronous pulley 311, as shown in fig. 2, one end of the synchronous transmission rod 32 is connected to the driving synchronous pulley 311 of one group of transmission assemblies 31 or the output shaft of the motor through a coupling 33, and the other end of the synchronous transmission rod 32 is connected to the driving synchronous pulley 311 of the other group of transmission assemblies 31.
As shown in fig. 3 and 4, the mounting plates 21 are provided at both sides of the elevating platform 20, and the mounting plates 21 are lower than the upper surface of the elevating platform 20, the sides of the mounting plates 21 are processed into flat clamping planes 211, clamping plates 212 are provided in opposite directions of the clamping planes 211, corresponding timing belts 313 are interposed between the clamping plates 212 and the clamping planes 211, the clamping plates 212 are pressed against the timing belts 313 by the clamping plates 212 through fastening members penetrating the clamping plates 212, so that the timing belts 313 are connected to the elevating platform 20, and thus the elevating platform 20 moves along with the timing belts 313. Preferably, the teeth 2121 are machined on the inner plate surface of the clamping plate 212 to increase the friction between the clamping plate 212 and the timing belt 313, so as to avoid slipping of the timing belt 313 relative to the lifting table 20, thereby improving the synchronicity of the lifting table 20 and the timing belt 313.
Based on the above, the driving motor 50 is operated to directly drive the driving synchronous pulley 311 of one group of transmission assemblies 31 to rotate, and indirectly drive the driving synchronous pulley 311 of the other group of transmission assemblies 31 to rotate by means of the synchronous transmission rod 32, so as to drive the two synchronous belts 313 of the two transmission assemblies 31 to synchronously operate, thereby synchronously driving the lifting platform 20 to vertically lift at both sides, so as to realize the adjustment of the height of the light emitting screen 100 on the lifting platform 20.
By adding an electric element such as an encoder to the drive motor 50 to record the rotation angle and the number of turns of the drive motor 50, the height of the lift table 20 can be precisely controlled.
The noise generated by the synchronous belt and the synchronous belt wheel in the transmission process is smaller, so that the synchronous belt and the synchronous belt wheel meet the working condition requirements better; and the belt transmission has lower requirements on the installation precision of equipment, lower manufacturing and/or purchasing costs and lower maintenance costs.
The guide mechanism 40 includes a linear bearing 41 and a guide optical axis 42, a vertically penetrating mounting hole is formed in the mounting plate 21 at the side of the lifting platform 20, the linear bearing 41 is mounted in the mounting hole, the guide optical axis 42 passes through the linear bearing 41, and two ends of the guide optical axis 42 are respectively connected and fixed with the upper support 12 and the base 11. The guide mechanism 40 is used to move the lift table 20 strictly in the vertical direction.
The travel control mechanism comprises two travel switches 60 (for example, a photocoupler switch is selected as a travel switch) and a limit piece 22, the two travel switches 60 are arranged on the side wall of the rectangular hollowed-out part 13 and are arranged up and down, the limit piece 22 is arranged on the side part of the lifting platform 20 and corresponds to the opening of the travel switch 60, when the lifting platform 20 drives the limit piece 22 to move down to a lower position so that the limit piece 22 moves to the opening of the lower travel switch 60, the lower travel switch 60 controls a motor to stop running to prevent structural interference between the lifting platform 20 and the base 11, and when the lifting platform 20 drives the limit piece 22 to move up to a higher position so that the limit piece 22 moves to the opening of the upper travel switch 60, the upper travel switch 60 controls the progressive motor to stop running to prevent interference between the lifting platform 20 and the upper support 12. Thus, the stroke control mechanism defines the vertical movement stroke of the elevating platform 20.
A drag chain 70 is further installed between the lifting table 20 and the base 11, the drag chain 70 is used for arranging the wire harness, the drag chain 70 includes two drag chain bodies 71 pivoted to each other, and the two drag chain bodies 71 are unfolded or folded along with the lifting of the lifting table 20, so that the wire harness can be protected and only a small space is occupied.
The above embodiments are only exemplary embodiments of the present utility model and are not intended to limit the present utility model, the scope of which is defined by the claims. Various modifications and equivalent arrangements of this utility model will occur to those skilled in the art, and are intended to be within the spirit and scope of the utility model.
Claims (9)
1. A lift platform assembly for adjusting the height of a light emitting screen, comprising:
a frame;
the belt transmission mechanism comprises a synchronous transmission rod and two groups of transmission components, and the two groups of transmission components are symmetrically arranged at two sides of the frame; each group of transmission components comprises a driving synchronous pulley, a driven synchronous pulley arranged above the driving synchronous pulley and a synchronous belt sleeved on the driving synchronous pulley and the driven synchronous pulley, and two ends of the synchronous transmission rod are respectively connected to the driving synchronous pulleys of the two groups of transmission components;
the lifting table is used for placing the luminous screen, and two sides of the lifting table are respectively connected to synchronous belts of the two groups of transmission assemblies;
and the driving motor is configured to be adjustable in rotating speed and controllable in rotating angle, is fixedly connected to the frame and is used for driving the driving synchronous pulley of one group of transmission assemblies.
2. The lifting platform device for adjusting the height of a light-emitting screen according to claim 1, wherein rectangular hollowed-out parts are formed on two sides of the frame, and a synchronous belt of the transmission assembly spans the rectangular hollowed-out parts; wherein:
two travel switches arranged up and down are arranged on the side wall of the rectangular hollowed-out part, and limit pieces are arranged on the side parts of the lifting platform, and the drive motor is controlled by the limit pieces to limit the vertical movement travel of the lifting platform through the openings of the travel switches.
3. The lift platform device for adjusting a height of a light emitting screen according to claim 1, wherein a side portion of the lift platform is provided with a mounting plate, a side portion of the mounting plate is formed with a clamping plane, and the timing belt is connected to the lift platform by clamping the timing belt at the clamping plane by means of a clamping plate.
4. A lifting platform device for adjusting the height of a light emitting screen according to claim 3, wherein the inside of the clamping plate is provided with teeth marks for increasing the friction between the clamping plate and the timing belt.
5. The lift platform device for adjusting a height of a light emitting screen of claim 1, further comprising a guide mechanism comprising:
a mounting hole formed at a side portion of the elevating platform;
a linear bearing mounted in the mounting hole;
and the guide optical axis vertically penetrates through the linear bearing, and two ends of the guide optical axis are connected to the frame.
6. The elevating platform assembly for adjusting the height of a light emitting screen according to claim 1, wherein the frame comprises a base of rectangular structure and an upper support of rectangular structure; the base is spliced with the upper support through a positioning column.
7. The lift platform assembly for adjusting the height of a light emitting screen of claim 1, wherein the frame is injection molded from a plastic material.
8. The elevating platform assembly for adjusting the height of a light-emitting screen according to claim 1, further comprising a buckle plate, wherein the buckle plate is provided with a downward flange, the buckle plate is buckled on the light-emitting screen, the downward flange is opposite to a lateral end surface of the elevating platform, and the downward flange and the lateral end surface are penetrated through by a pin shaft or a bolt so that the buckle plate positions the light-emitting screen.
9. The elevating platform assembly for adjusting the height of a light emitting screen according to claim 1, wherein a drag chain for arranging wire harnesses is installed between the frame and the elevating platform, the drag chain comprises two drag chain bodies pivoted to each other, and the two drag chain bodies are folded by pivoting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321152970.4U CN220205119U (en) | 2023-05-13 | 2023-05-13 | Lifting platform device for adjusting height of luminous screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321152970.4U CN220205119U (en) | 2023-05-13 | 2023-05-13 | Lifting platform device for adjusting height of luminous screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220205119U true CN220205119U (en) | 2023-12-19 |
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ID=89148462
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321152970.4U Active CN220205119U (en) | 2023-05-13 | 2023-05-13 | Lifting platform device for adjusting height of luminous screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220205119U (en) |
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2023
- 2023-05-13 CN CN202321152970.4U patent/CN220205119U/en active Active
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